The M48T201Y-70MH1F is a 2 Mbit (2Mb) 5V Timekeeper SRAM designed by STMicroelectronics to integrate a memory and a real-time clock in a single package. This highly integrated component ensures data and clock functionality within a range of embedded systems, which require a reliable time base and battery-backed non-volatile memory.

Key Features

• Integrated Power-Fail De-Select (PFD): This feature ensures that the memory switches to battery backup mode automatically during power failure, thus preserving data integrity.
• Real-Time Clock (RTC): The built-in RTC keeps track of seconds, minutes, hours, day, date, month, and year. It also accounts for leap years up to the year 2100.
• Low Power Consumption: Designed for energy efficiency, this device operates in a power-saving mode to extend the life of the onboard battery.
• Serial Interface: The M48T201Y-70MH1F features a serial interface to manage clock functions, which simplifies integration into system designs.
• 48-Pin DIP Package: The device comes in a 48-pin DIP (Dual In-line Package) configuration, which is suitable for through-hole mounting, providing robust physical connections.

Applications

The M48T201Y-70MH1F is ideal for a wide range of applications that require a reliable real-time clock and data retention without an external battery. These include:

• Embedded systems
• Utility meters
• Security systems
• Industrial control systems
• Point of Sale (POS) terminals

Technical Specifications

The device operates within an industrial temperature range of -40°C to +85°C, ensuring reliable performance under extreme conditions. It has a clock accuracy of ±5 ppm at 25°C, which translates to less than 3 minutes per year deviation. The access time of 70ns allows for rapid data retrieval and storage, making it suitable for applications requiring fast data access.

With the M48T201Y-70MH1F, STMicroelectronics offers a robust and reliable solution that combines the functionality of a non-volatile memory with an accurate real-time clock, all in a single, easily integrated package.